multifloral hybrid

I have recently acquired a Paphiopedilum in bud/flower labelled as 'glanduliferum' (depicted). However it is not that...The general consensus is that it is an x adductum hybrid, but which one? I personally think it is St Swithin x adductum (Booth St -Adductum) as it looks very similar to this...

Paphiopedilum 'Susan Booth' has just opened today. It is a primary hybrid of rothschildianum x glanduliferum. I acquired this young plant a few weeks ago in low spike, and this is it's first flower. I am really pleased with the bloom. :-)

I’ve been trying to track down a P. vipanii in the US without much success. Any leads will be much appreciated! I’m also interested in other Brachypetalum x Polyantha hybrids. -Ernie